div#main-div{
    height: 60%;
    overflow: auto;
}
p.message{
    /*background-color: #cccc;*/
    background-color: #0000;
    border-radius: 20px;
    margin-left: 10%;
    margin-right: 10%;
    padding-left: 2%;
    margin-bottom: -15px;
    border: 1px solid #cccc;
    box-shadow: 2px 2px 3px #cccc;
}
p.message img{
    height: 20%;
    cursor: zoom-in;
}
p.system-message{
    background-color: #cccc;
    display: block;
    text-align: center;
    border-radius: 20px;
    border: none;
    box-shadow: none;
}
div#sendPicDiv{
    display: none;
}
form#virtual-form{
    display: none;
}
a#showToast{
    display: none;
}
.float-message{
    background-color: #777c;
    border-radius: 5px;
    box-shadow: 5px 5px 10px #666,-2px -2px 10px #444;
    position: fixed;
    z-index: 800;
    left: 5%;
    right: 5%;
    top: 30%;
    bottom: 50%;
    font-size: 18px;
    text-align: center;
    padding-top: 5%;
    color: white;
    display: none;
}

.message-blue{
    color: #2196f3;
}
.message-green{
    color: #8bc34a;
}
.message-purple{
    color: #9c27b0;
}
.message-red{
    color: #f44336;
}
.message-yellow{
    color: #ffc107;
}
.message-orange{
    color: #ff9800;
}
.message-brown{
    color: #795548;
}
.message-gray,.message-grey{
    color: #9e9e9e;
}

.text-h1{
    font-size: 44px;
}
.text-h2{
    font-size: 36px;
}
.text-h3{
    font-size: 28px;
}
.text-h4{
    font-size: 20px;
}
.text-h5{
    font-size: 16px;
}
.text-h6{
    font-size: 12px;
}

input#message{
    width: 50%;
}
#zoom_pic {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 9999999999;
    width: 100vw;
    height: 100vh;
    background-color: #cccd;
    opacity: 0;
}

#zoom_pic img{
    position: fixed;
    border: #ccc;
    cursor: zoom-out;
    box-shadow: 0 0 5px #ccc;
}
#zoom_pic span{
    font-size: 100px;
    color: white;
    position: fixed;
    right: 5vw;
    top: 5vh;
    cursor: pointer;
}
@media screen and (min-width: 846px){
    #zoom_pic img{
        /*大屏*/
        top: 20%;
        left: 26%;
        width: 40%;
    }
}
@media screen and (max-width: 845px){
    #zoom_pic img{
        /*小屏*/
        top: 25%;
        left: 20%;
        width: 60%;
    }
}